I‘m reading a book about body language and I‘m at the „handshake“ chapter. Last 2 pics, you can tell what‘s going on just by looking at the handshake. There are 2 possible scenarios looking at the 2nd pic.
The first is that Arnold might have reached out with his palm facing down. It‘s a display of dominance. Remember the nazi sign? They used the palm facing down sign. The guy then used both hands to adjust the position of Arnold‘s hand into vertical. Into a more equal position. The 2nd option is that maybe the fat guy just used both hands to shake Arnold‘s hand which is not ok unless you are friends or know the person from before. If this happened, Arnold, deep down, wasn‘t pleased and was left with a bitter taste.
In the last picture, Arnold has an upper hand. He is standing on the left so when the handshake is performed for the picture taking, he has the dominant position because his hand is positioned above the other guy‘s. Remember fellas. Whenever you take a pic with somebody while shaking hands always stand on the left looking from the photographer‘s position. This will make you look more dominant than the other guy. At least if you are around the same size and height.